substantia
(redirected from substantia propria choroid)substantia
[sub-stan´she-ah] (L.)substance; used in anatomic nomenclature in naming various components of body tissues or structures.
substantia al´ba white matter.
substantia gelatino´sa the substance sheathing the posterior horn of the spinal cord and lining its central canal.
substantia gri´sea gray matter.
substantia ni´gra a dark layer of gray matter separating the tegmentum of the midbrain from the crus cerebri.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
sub·stance
(sŭb'stănts),Material.
Synonym(s): substantia [TA], matter
[L. substantia, essence, material, fr. sub- sto, to stand under, be present]
Farlex Partner Medical Dictionary © Farlex 2012
sub·stance
(sŭb'stăns)[L. substantia, essence, material, fr. sub-sto, to stand under, be present]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012